NCP1252ADR2G ON Semiconductor, NCP1252ADR2G Datasheet - Page 5

• Manufacturer Part Number: NCP1252ADR2G
• Description: IC PWM CTLR CURRENT MODE 8-SOIC
• Manufacturer: ON Semiconductor

Specifications of NCP1252ADR2G

• Frequency - Max: 500kHz
• Pwm Type: Current Mode
• Number Of Outputs: 1
• Duty Cycle: 50%
• Voltage - Supply: 9 V ~ 28 V
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -25°C ~ 125°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Duty Cycle (max): 48 %
• Mounting Style: SMD/SMT
• Switching Frequency: 92 KHz to 550 KHz
• Maximum Operating Temperature: + 125 C
• Fall Time: 22 ns
• Rise Time: 26 ns
• Synchronous Pin: No
• Topology: Flyback, Forward
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 3. ELECTRICAL CHARATERISTICS
(V
DRIVE OUTPUT
Clamping voltage (maximum gate voltage)
High−state voltage drop
CYCLE SKIP
Skip cycle level
Skip threshold Reset
Skip threshold Hysteresis
SOFT START
Soft−start charge current
Soft start completion voltage threshold
Internal delay before starting the Soft start when
V
PROTECTION
Current sense fault voltage level triggering the
timer
Timer delay before latching a fault (overload or
short circuit)
Brown−out voltage
Internal current source generating the Brown−out
hysteresis
3. Guaranteed by design
4. V
CC(on)
CC
10.2
10.0
9.8
9.6
9.4
9.2
9.0
8.8
ramp
= 15 V, R
−40
is reached
, R
−20
ramp
Figure 3. Supply Voltage Threshold vs.
T
= 43 kW, C
Guaranteed by design
Characteristics
0
Junction Temperature
TEMPERATURE (°C)
DRV
20
VCC(on)
VCC(off)
= 1 nF. For typical values T
40
60
80
TYPICAL CHARACTERISTICS
V
CC
100
R
DRV
http://onsemi.com
= V
= 47 kW, C
−25°C ≤ T
J
−5°C ≤ T
When CS pin > F
= 25°C, for min/max values T
Test Condition
= 47 kW, C
CC(min)
SS pin = GND
120
V
CC
5
J
= 25 V
J
+ 100 mV, R
DRV
≤ +125°C
≤ +125°C
DRV
1.20
1.15
1.10
1.05
1.00
0.95
0.90
= 1 nF
CS
= 1 nF
−40
DRV
−20
Figure 4. Supply Voltage Hysteresis vs.
V
V
V
Symbol
DRV(clamp)
J
SS
skip(reset)
skip(HYS)
V
T
= –25°C to +125°C, unless otherwise noted)
V
F
V
V
I
I
0
fault
BO
skip
SS
delay
SS
CS
BO
CL
Junction Temperature
TEMPERATURE (°C)
20
0.974
Min
100
0.2
8.8
3.5
0.9
8.8
8.6
10
−
−
−
−
40
V
60
V
skip(HY
Typ
120
0.3
skip
4.0
15
50
25
10
15
10
10
S)
1
1
+
80
1.026
Max
11.2
11.2
500
155
0.4
4.5
1.1
18
11
20
−
−
100
Unit
120
mV
mV
ms
ms
mA
mA
V
V
V
V
V
V